SSC CGL Chemistry Questions with Answers & Explanations

The chemical formula of water is

1. AH₂O₂
2. BHO
3. CH₃O
4. DH₂O

Lemon juice contains

1. ACitric acid
2. BFormic acid
3. COxalic acid
4. DAcetic acid

LPG mainly contains

1. ACarbon monoxide
2. BEthane and hydrogen
3. CMethane only
4. DButane and propane

The most abundant gas in the Earth's atmosphere is

1. ACarbon dioxide
2. BOxygen
3. CNitrogen
4. DArgon

Vinegar contains

1. ACitric acid
2. BLactic acid
3. CTartaric acid
4. DAcetic acid

Which gas is known as "laughing gas"?

1. ANitric oxide
2. BAmmonia
3. CNitrogen dioxide
4. DNitrous oxide

Baking soda is chemically

1. ASodium carbonate
2. BCalcium carbonate
3. CSodium bicarbonate
4. DSodium chloride

Diamond and graphite are allotropes of

1. ASilicon
2. BSulphur
3. CCarbon
4. DPhosphorus

Plaster of Paris is prepared from

1. ALimestone
2. BBauxite
3. CHaematite
4. DGypsum

The atomic number of an element is the number of

1. AElectrons and neutrons
2. BNucleons
3. CProtons in its nucleus
4. DNeutrons in its nucleus

The chemical symbol of sodium is

1. AS
2. BSd
3. CSo
4. DNa

The main ore of aluminium is

1. ACinnabar
2. BGalena
3. CHaematite
4. DBauxite

The lightest element is

1. ALithium
2. BHydrogen
3. CHelium
4. DOxygen

The chemical formula of common salt is

1. ANaCl
2. BNa₂CO₃
3. CKCl
4. DNaOH

Which metal is liquid at room temperature?

1. ALead
2. BAluminium
3. CSodium
4. DMercury

CNG mainly contains

1. AButane
2. BEthylene
3. CPropane
4. DMethane